kottmann



AUTOMATIC OPERATING DEVICE FOR USE WITH CALCULATING MACHINES Filed Sept. 8, 1931 a Sheets-sheaf 1 Int 8775f": A0906? mZ'Z mazn BJMM A ffarrzey Sept. 22, 1936. A. KOTTMANN 2,4,94

AUTOMATIC OPERATING DEVICE FER USE WITH CALCULATING MACHINES Filed Sept. 8, 1931 8 Sheets-Sheet 2 caOOOQQOQQ QQQOOQQQO G: 0 o O 0 Q Q 0 0 Q 0 Q 0 0 o m o 0 Invenfom Auguut K737122221 Sept. 22, 'lg fi. KOTTMANN 2,54,9@4

AUTOMAT IC OPERATING DEVICE FOR USE WITH CALCULATING MACHINES Filed Sept. 8,. 1931 8 Sheets-Sheet 3 Way,

@@@ @IEEIIEEJIEJEIIEE] BYMMA Sept. 22, 1936. NN a 2,054,904

AUTOMATIC OPERATING DEVICE FOR USE WITH CALCULATING MACHINES Filed Sept. 8, 1931 8 Sheets-Sheet 4 Sept. 22, 1936. T NN 2,054,904

AUTOMATIC OPERATING DEVICE FOR USE WITH CALCULATING MACHINES Filed Sept. 8, 1931 8 Sheets-Sheet 5 Sept. 22, 1936. A. KOTTMANN AUTOMATIC OPERATING DEVICE FOR USE WITH CALCULATING MACHINES Filed Sept. 8, 1931 8 Sheets-Sheet 6 Sept. 22, 1936. A. KOTTMANN 2,054,904

AUTOMATIC OPERATING DEVICE FOR USE WITH CALCULATING MACHINES Fil ed Sept. 8, 1951 8 Sheets-Sheet '7 Sept. 22, 19%. A. KOTTMANN AUTOMATIC OPERATING DEVICE FOR USE WITH CALCULATING MACHINES Filed Sept. 8, 1931 8 Sheets-Sheet 8 A rmne Patented Sept. 22, 1936 AUTOMATIC OPERATING DEVICE roe use WITH CALCULATING MACHINEQ August Kottmann, Sommerda, Germany, assignor to ,Rheinische Metallwaarenund Maschfine fabrik Sommerda Aktiengesellschatt, ,Soito merda, Germany, a corporation of? Germany Application September 9, 1931,, Serial No. senate In Germany September 113, Mitt 2 Claims.

In the automatic calculating machine having an automatic multiplying device according to the application Serial No. 528,105 filed April 6, 1931 of which the present case is an improvement, the arrangement exists that the two factors of the multiplication problem are first pre-set into a presetting means (factor setting pin carriage), which is used in common for both factors, and thereupon are transferred either into the actuators of the register drive mechanism or into the actuators of the multiplying device. The transfer is accomplished by means of a power operated mechanism which transfers the factors under the control of two selecting devices (multiplicand key and multiplier key). The transfer drive, after it has accomplished the transfer of the factors, re= turns the factor setting pin carriage, which was shifted by the setting up of a factor, to its original position, and simultaneously clears or zeroizes the setting pins.

In accordance with the present invention, shifting rods for rendering the main drive mechanism operative and inoperative are actuated by the movement of the factor setting carriage in its return to initial position after completion of a transfer under the control of an intermediate member brought into its operative position only by that selector key which determines the transfer of the second factor, whereby the power drive is clutched to the main drive shaft of the calculating machine and the multiplication is carried out.

The device in accordance with the invention has the advantage that the key for rendering the motor operative and the manual operation necessary for operating the same are eliminated.

The machine is illustrated on the accompanying drawings in which:

Fig. 1 is a side elevation of the factor setting the factor setting Fig. 5 is a partly sectional side elevation of the calculating machine; .r-

Fig. 6 is a sectional detail elevation of the backtravel and clearing device of the factor setting pin carriage; g Fig. is an elevation of a switching device for moving the'factor setting pin'carriage;

Fig. 8 is a partly sectional elevation of the clutch device between the rack bars and the set= ting discs of the stepped wheels;

9 is a detail side elevation of the drlve de== vice for moving of the register mechanism;

Fig. 10 is a rear elevation of the drive means illustrated in Fig. 9;

Fig. 11 is a detail elevation of the vmoving de-= vice for the register operating gearing of the calculating machine;

Fig. 12 is a detail elevation of the drive means for moving the register mechanism;

Fig. 13 is an elevation of a locking pawl for the rack bar of the register mechanism moving me Fig. it is a partly sectional elevation of the selecting key which causesthe engaging of the clutching elements of the register drive means;

Fig. 15 is a partly sectional elevation of the selecting key which causes the engaging of the clutching elements of multiplying mechanism;

Fig. 16 is an elevation of a latching and un= latching drive for both selecting keys;

Fig. 17 is a detail view, partly in central lon= gitudinal section, showing the difierential xnech= anism of Figs. 4 and Hon a larger scale;

Fig. 17a is a side view of one of the locking ele ments of Fig. 17 with the slide bar in section;

Fig. 17!! is a similar view of another locking element;

Fig. 18 is an end view, partly in section, of the setting discs and associated parts;

Fig. 19 is a side view of Fig. 18;

Fig. 20 is a side view of further details associated with the setting discs; Y Y

Fig. 21 is a plan view of the machine showing further details; and

Fig. 22 is aside elevation of the mutliplier key.

The factor setting rods i are set by the keys 2 whose key levers move the intermediate leversv I which rotate about the shaft 8 and which, by means of their hammer-like heads to, force the setting pins i out of their position of rest.

If one of these intermediate levers!) is lifted by means of the keys 2, then the short arm lb thereof will press against the ball 5, likewise moving about the shaft 8. The said ball 6, by means of its angle-shaped end i and the pawl 9 engaged thereby and which is osclllatable about the screw 8, will turn the angle bail ii (Fig. 7). This in turn actuates the anchors I2 which engage in the rack bar I (Fig. 2) and thus causes the setting element carriage i3, driven by a spring Ila, to move into the next decimal position.

Corresponding to the number of rows of setting iii responding to pins, there are rack bars 28 (Figs. 3 and-5) supported above the factor setting carriage I3, which have downwardly extending portions 280. which abut against a slide element 21. The slide element 21 is set into horizontal reciprocating movement by the motor I5, supported behind the calculating machine, through the gearing I6,

drive element I1, clutch pawl I8, clutch disc I9, shaft 28, bevel gears 2| and 22, gear wheels 23 and 24, crank disc 25 and connecting rod 26.

In the position of rest of the drive shaft 20 the slide element 21 in Fig. 5 lies at the extreme right and moves to the left only uponthe first half revolution of the crank disc 25, to return into the initial position upon the second half revolution.

The rack bars 28 are drawn to the left by the springs 29 and are thereby in position to follow the movements of the slide elements 21, in case they are not secured in the initial position by the latch 38 provided for each rack bar.

The latches 38 are disengaged by a projection I3b (Figs. 2 and 5) on the setting pin carriage I3, in the forward shifting of the latter, in such way that always only those rack bars under which.

rows of setting rods or pins lie can follow the slide element 21 (Figs. 5 and 6). When the carriage l3 shifts laterally, only those latches 38 which lie above it will be actuated thereby.

If any setting pin I in the carriage I3 is struck by means of the keyboard 2, the same will project into the fieldof movement of the rack bar 28 lying above the same. If the slide element 21 is now set into motion by means of the crank disc 25 and connecting rod 26, the rack bar 28 will follow the same until it abuts with its end 28b against the setting pin I, whereby the magnitude of movement of the rack bar 28 constitutes a measure for the digit at that time corresponding to the setting pin I.

Over each of the rack bars 28 which provide for transferring the digits set up by the factor setting pins selectively either into the register actuators or calculating drive wheels 6| or into the multiplier mechanism 82 etc., there are two gear wheels 3| and 32 (Fig. 5), of which one set is in engagementwith the setting discs 6| of the pin wheels (register actuators) and the others with the elements 9| of the multiplying device which are to be set, and whereof as selected the one set or the other may be brought into engagement with the rack bars 28 upon the-return of the slide element21 and the latter, so that upon the return of the rack bars their movement corthe preset digits would be transto the register drive means or to the multiplying device. Hereinafter it will be further explained how these gear wheels 3| and 32 are brought into or out of engagement with the rack bars 28.

A bar-36 (Figs. 3 and 6) is secured to the factor setting pin carriage l3 and engages, by means of a rod 31, a fork. 38 of a shift lever 48, pivoted about a shaft 39. Upon the lever 48 there is a lug 4|, which, due to the carriage I3 moving to the left during the setting operation, approaches a cam 35, moved by the shaft 28, through the gear wheels 33 and 34, so that the factor setting pin carriage I3 is again pressed back into the initial position by this cam after completion of the digits transfer. The inclined surface 42 (Fig. 1) provided over the carriage I3 and below which the pins thereof pass on the return proferred either vides for clearing or restoring the pins I.

When the setting of the number in the carriage I3 has been accomplished and the transference of the same to the register drive mechanism as a multiplicand is desired, then the "multiplicand key 43 (Figs. 4, 14, and 16) arranged in front of the machine, designated Md, should be actuated. The key 43 is pivoted about the shaft 44 and is so constructed that upon depressing it its end 43a presses against the surface 45a of the slide bar 45 and shifts the same against the force of the spring 46 (Fig. 4). The slide bar 45 on the one hand carries along the bar 41, which by means of the projection 48 closes the switch 49 for suppplying current to the motor I5 and by means of its end 5| releases the clutch pawl I 8 and thereby provides connection between the driver I1 and the clutch disc I9 so that now the motor I5 will set the shaft 28 into rotation.

The slide bar 45 simultaneously forces the slide element 52 to the right by means of the incline 45b and thereby shifts the angle lever 53 (Fig. 8) about its pivot.

The fork-like end 55a of the angle lever 53 encompasses the rod 58 of the latch 51, which is shiftable on the lever 55 pivotally arranged about the point 54. The lever 55 is connected with the shaft 56 by suitable means in such manner that it is capable of shifting the latter for a desired distance in the direction of its length, when it itself is moved. When the latch 51 in Fig. 8 is moved downwardly by the angle lever 53,, it projects into the field of action of the cam 68, rotating with the shaft 59. Shaft 59 is operated by the gear wheel 24 already mentioned. If the shaft 59 and thereby the cam 68 is set into rotation, then during the second half of the revolution, that is, during the return of the rack bars 28, the latch 51, the lever 55, and the shaft 56 are forced to the right by the bulge 60a, so that the gear wheels 3| (Fig. 5) set upon the shaft 56 will come into engagement with the discs 6| of the pin wheels and with the rack bars 28,

and thus provide a possibility of transferring from one part to the other. The number preset in the setting pin carriage is therefore trans ferred to the register drive mechanism.

An indicating mechanism I86 (Fig. 5) in engagement with the setting discs 6| permits supervision at all times of the value set in the pin wheels.

The shaft 69 which carries the toothed wheels 32 is mounted on two arms 6% capable of swinging around the shaft 69a of the numeral slide (Fig. 5). A spring 690 holds the shaft 69 in a raised position as long as it is not pulled downwardly by the hook 61-.

Upon an extension of shaft 28 there is provided a cam disc. I01 (Figs. 3, 14, 15, and 16) with a tooth I88. The latter is so arranged that after one revolution of the shaft 20 is nearly completed I I0 secures the depressed key 43 in such depressed position, and thereby releases the key. At the instant that the key 43 is released, all the devices affected thereby are returned to their initial positions by means of suitably arranged springs. The shaft 28 driving the rack bars 28 therefore makes only one revolution, toward the end of which also the clutching wheels 3| providing the connection between the transfer rack bars 28 and the setting discs 6| of the pin wheels are again disengaged.

If the number preset in the factor setting carriage is to be transferred into the multiplication mechanism 62, that is, if the number is to be used as a multiplier, then the multiplier key 63 (Figs. 4, 15, and 16) designated Mr is depressed. From this key the switch controlling the motor is closed by means of the slide bar 41 and the clutch pawl I8 is released, that is, the drive is put in action. This is accomplished by key 83 coacting with and moving the member 68 (Fig. 4) which has at its rear end a projection 84a extending to the left abutting against the projection 41a of the slide bar 41. Furthermore, the lever 65 is so oscillated and the slider 66 so carried along, by the key 63, that the slider, as Fig. 5 shows, presses the hook 61 against the shaft 69 carrying the gear wheels 32.

The hook 61 (Fig. 5) is set into up-and-down swinging motion by means of the cam disc 25 and the lever 78, pivoted at the point 68, which is pressed against the said cam by the spring II in such manner that during the second half of the revolution of the cam disc 25, that is, during the return of the slide element 27 and the rack bars 28, it draws the shaft 69 downwardly and brings the gear wheels 82 into mesh with the rack bars 28. Inasmuch as the gear wheels 32 on the other hand are in engagement with the elements SI of the multiplying device which are to be set, the number preset in the setting pins is transferred into the multiplying device.

The gear wheels 32 do not come out of mesh with the gear wheels 9i inasmuch as the shaft 69 of the gear wheels 32,-as well as the shaft 9| 0. (Fig. 5) of the gear wheels 9 I, and number wheels 93 are mounted in two links 82, which in turn are swingably mounted at 62c internally on the side walls of the housing of the registering mechanism. The spacing of the shafts 69 and cm is' therefore unchangeable. Both shafts are swung downwardly by the hook 8'1 The hook 6? lies closely adjacent the left side wall of the machine frame in substantially the same plane as the crank disc 28 (Fig; 4) thus rather far to the left. It projects from below into the housing 85 of the registering mechanism which is open below. The number wheels 93 and the gear wheels 9i and 32 lie rather far to the right in the housing of the register, as may be seen from the location of the peep holes 9322 (Fig. 4). The portion of the shaft 69 which comes into engagement with the hook '61 is therefore free from gear wheels 32 and can freely slide through under the hook 81 when the register mechanisms shift.

, Similarly to the key 43 provided for the multiplicand, here also the locking pawl for the key 63 will be released after completion of the transfer, by the same device, and the elements depending thereon here also will return to their previous positions, while the supply of current to the motor is interrupted. Thus also in this transfer the shaft 28 completes only one revolution and the rack bars 28 make only a single to-andfro motion.

As hereinafter described the setting of digits in the factor setting pin carriage and their transfer into the calculating machine shift the slide I6 in such a manner thatit releases the clutchtransferred to one of the other two shafts Hand 88. Shaft 83 moves the register actuators GI,

whereas shaft 84 actuates the register shifting mechamsm 84a, 99 (Fig. 12). The differential 82 is controlled by a locking element 86 carried in the subframe. This locking element 86 cooperates with two opposed locking elements 81 and 88 (Figs. 4 and 11) of the differential-shafts in such manner that when it comes out of engagement with one of the opposed locking elements it immediately is in engagement with the other, so that one of the two differential shafts is always free while the other is locked. Upon the locking element 88 there is provided a tooth 98, which, upon the assumption that the corresponding member is freed for a movement by the locking slide bar 86, toward the end of each revolution again so shifts the said locking slide bar that the shaft 84 is again locked. The shaft 84 is therefore always free only to the extent of one revolution.

The slide bar 86 is driven by the gear wheels 9! of the multiplying mechanism 62 (Figs. 4, 9 and cured to the gear wheels 9i, which depress the lever 98 when the numeral disc 98 seeuredto the sively engaged, and the shaftiii must make two successive revolutions. The yieldable connection of the slide bars 88 and 9?, through spring 88a. enables the slide bar 9'! (Fig. 4) to remain in the upwardly shifted position during two revolutions, while the slide bar 88 in Fig. i may transiently be shifted so far downwardly that the tooth 98 can pass through the notch of the slide bar 88 provided for the same. The register mechanism moving device of the calculating machine, as seen from Fig. 12, consists of a rack bar 98 secured to the register carriage in the ratchet teeth of which engages a moving pawl 99 operated from the shaft 84 through the eccentric 84a so that in case the shaft 88 runs free, upon every revolution of the same the carriage will be carried on for one decimal place.

After each movement of the register mechanism through one place a locking pawl I88 (Figs. 4 and 13) falls into a second row 98a of teeth arranged laterally of the rack bar 88 from tooth to tooth and secures the carriage in its position at the moment.

If the carriage moves beyond the position intended for the last place, then a cam I8i forces the locking pawl I88 out of the ratchet teeth while simultaneously a further pawl I83 under the tension of the spring I82 secures it in the disengaged position by engagement in the notch I88a. in the pawl I88, so that aftercompletion of the calculation the carriage is automatically drawn back into the initial position by means of the spring I84 and stands ready for a further calculating operation. If by shifting the bar IGthe main drive of the machine is engaged for a new calculation operation the pawl I83 is removed from its locking position by the bar 16, so that the locking pawl I88 again falls into the ratchet teeth 9811. through the tension of spring I85.

The transporting pawl H2 is moved by the drive shaft 83 of the register drive mechanism 6i Small shifting lugs 92 (Figs. 9 and 10) are sethrough an intermediate shaft and, is guided by an elongatedslot on the shaft 69a. The pawl II2. together with its drive are non-slidably mounted in the frame of the machine. I The shaft of the intermediate wheel H6 and the shaft II3 aremounted in the frame of the machine by means of holders III, H8, and H9, whereby the shaft 62a is mounted in the intermediate walls I20a and I20b of the register housing.

The shaft I I3 rotates at the same speed as the shaft 63 so that upon every revolution of the shaft 83 the pawl II2 turns the wheels 32 and 9| to an extent corresponding to the numerical I plication mechanism, the multiplier selector key.

63 is depressed. This energizes the electric motor I5 ancl connects it with the drive, shaft 20 and also engages'the transfer mechanism with the setting elements of the multiplier mechanism.

In accordance with the invention, the multiplier key 63, with the assistance of the connecting rod 64, the pin I2Ib, and the lever I2'I, rotatable about the screw I2Ia, shifts a slide I22, which has a narrow part I22b in the field of motion of aseparate pin I30 on the carriage I3 and a pin I23 on an angle lever I24. This shift of the slide I 22 brings its wide end I22a into the field of movement of the pins I30 and I23.

The transfer mechanism, as previously described, after each transfer of a-factor, returns the carriage I3 to the right into its-initial position by means of cam gearing moved by the shaft 20 (Fig. 6).

When upon depressing the multiplier key 63, the slide I22 has its wide portion I22a in the field of movement of the pins I30 and I23, then upon the return of the setting pin carriage I3, the pin I3c at the end of its return movement encounters the slide I22 and pushes it somewhat to the right, against the abutment pin I23 of the angle lever I24 and thereby produces a swinging of the angle lever I24 about the pivot point I25. The angle lever I24, by means of the abutment 16a shifts the slide I6, which closes the contacts 8| and releases the clutch pawl I8, so that the motor I5 will-be supplied with current and the driver 11 and the clutch disc I9 will become connected to one another. The motor I5 now drives the main drive shaft 6Ic of the calculating machine, through the shaft I26, worm gear I2I, clutch.I8, I1, and I6, shaft 80, differential gear 82 and bevel gears I28 and I3I. The further carrying-out of the calculating operation then pro'eeds.

After the completion of the transfer of the multiplier and the return of the factor setting carriage l3 to the initial position, the shaft 20 of the transfer mechanism releases a locking means which heretofore has held the multiplier selecting key 63 in the depressed position. The multiplier key and the parts moved thereby, particularly also the slide I22, then, under the action of springs, return again to their initial positions.

Thus, immediately after the engagement of the drive means, the narrow part I22b of the slide I22 is brought between the pins I30 and I23. The angle lever I 24 therefore is no longer forced to the right by the slide I22, so that after the multiplication is completed the shifting rod I6 of the main drive mechanism and the angle lever I24 of the multiplying mechanism can be again set back and the drive mechanism can be again disengaged.

If the transfer mechanism is set into action by depressing the multiplicand key 43, in order to transfer a numerical value into the calculating machine as a ,multiplicand, and, if, after this transfer, the factor setting carriage is brought back into the initial position, then no setting into engagement of the machine'drive mechanism occurs, because the slide I22 is not shifted by the multiplicand key and the pin I30 of the factor setting carriage cannot act upon the pin I23 of the angle lever I24 through the slide I22. Therefore, if first the multiplicand be transferred into the actuators of the register, and then the multiplier into the multiplying device, the main drive of. the calculating machine will be operative only after both factors have been transferred into the machine. This is necessary because the calculation can be carried out only after both factors have been transferred from the factor setting carriage.

The machine could. also be so constructed that the intermediate element I22 by means of which the factor setting carriage I3 moves the shifting rods I24 and I6 of the main drive mechanism, is brought into the active position by the multiplicand key (instead of by the multiplier key as described). The multiplier is first set into the multiplying device and only then the multiplicand is transferred into the register actuators, whereupon the main drive means is engaged only after both factors have been set up. It is therefore unimportant as to the invention which of the two selector keys brings the intermediate portant, however, that only one of the two selector keys should affect the intermediate element The setting discs 6Ia are ;r'estored to zero by the zeroizing of the register'wheels I06. These register wheels I 06 are zeroized by mechanism similar to that disclosed in German Patent No. 408,894.

I claim as my invention:-

1. An automatic multiplying machine, comprising a drive, a register, register actuators, mechanism co-operative with the actuators to effect multiplication, a factor presetting device, means selectively operative to transfer the value from the presetting device to the register actuators as multiplicand or to the mechanism to effect multiplication as multiplier, means including selective determination means to connect the drive to said transfer means to cause such transfer of the factors set upin the factor presetting device, means for engaging the drive with the register actuators to carry out multiplying operations, a, member movable from a normal position at the beginning of each factor 2 setting and returned to normal position-at the end of each factor transfer, and a device movable from an inoperative position into a position in the return path of said member upon setting the selective determination means for one of its modes of operation, said device when thus moved establishing driving connection between said member and the last mentioned drive engaging means at the end of said return path, to carry out the multiplication of the transferred factors.v

2. An automatic multiplying machine, comprising a drive, a, register, register actuators,

mechanism co-operative with the actuators to effect multiplication, a factor presetting carriage traversable from and to a normal position, means selectively operative to transfer the value from the presetting device to the register actuators as multiplicand or to the mechanism to effect multiplication as multiplier, means to connect the drive to said transfer means to cause such transfer of the factors set up in said carriage, a multiplicand key and a multiplier key for operating said connecting means, means for engaging the drive with the register actuators to carry out multiplications, a drive pin prodecting from said carriage, and a device movable by the multiplier key from an inoperative position into the return path of the drive pin, said device when thus moved establishing driving connection between the drive pin and the last mentioned drive engaging means at the end of its return path to carry out the multiplication 10 of the transferred factors.

AUGUST KO'ITMANN. 

